Quiz
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Which statement best explains why water is essential for all living things?
A
o Water makes up 65% of human beings.
Water is an essential component of blood.
o Water covers 75% of Earth's surface.
O Water is necessary for cellular functions.

How is the motion of the particles of water at 80 ⁰c different from the motion of the particles of water when it is 30 ⁰c?

What causes an unsaturated fatty acid to have a different shape than a saturated fatty acid? o a. unsaturated fatty acids have more hydrogen atoms. o b. unsaturated fatty acids have double carbon bonds. o c. unsaturated fatty acids have more nitrogen atoms. o d. unsaturated fatty acids have single carbon bonds.

Which layer will become saturated first when rain falls?